Why glTransformFeedbackVaryings not Exists in QT?
I´m using QT to develop OpenGL aplications but i cannot use the glTransformFeedbackVaryings function to get my transformations feedback.
Looking at the function specification, this function start to be a part of core profile from 4.1 version of OpenGL, but in all QOpenGLFunctions Objetcs , many of this functions simply not exists including the 4.1,4.2 and 4.3 objects.
How can i solve it?
Are you using the wrangler library for extracting OpenGL function pointers?
In fact all my Objects that use OpenGL Commands are being inherited from QOpenGLFunctions Object , including my Widget all the code are working fine, but , now i´m trying collect the transformed vertices from the OpenGL pipeline, But when i try use this function it doesnt find anything...return to me not find the function...
Yes ... try using the wrangler library inside your project. Pure OpenGL calls are limited to OpenGL 1.1 (in Windows environment), so to extract pointers to the hardware-implemented functions of your GPU you should make the "GLEW":http://glew.sourceforge.net/ part of your project.
Ok, i will try.
Thanks so much for your help.